vendor/github.com/hashicorp/go-getter/decompress_tgz.go

   1 package getter
   2
   3 import (
   4         "compress/gzip"
   5         "fmt"
   6         "os"
   7         "path/filepath"
   8 )
   9
  10 // TarGzipDecompressor is an implementation of Decompressor that can
  11 // decompress tar.gzip files.
  12 type TarGzipDecompressor struct{}
  13
  14 func (d *TarGzipDecompressor) Decompress(dst, src string, dir bool) error {
  15         // If we're going into a directory we should make that first
  16         mkdir := dst
  17         if !dir {
  18                 mkdir = filepath.Dir(dst)
  19         }
  20         if err := os.MkdirAll(mkdir, 0755); err != nil {
  21                 return err
  22         }
  23
  24         // File first
  25         f, err := os.Open(src)
  26         if err != nil {
  27                 return err
  28         }
  29         defer f.Close()
  30
  31         // Gzip compression is second
  32         gzipR, err := gzip.NewReader(f)
  33         if err != nil {
  34                 return fmt.Errorf("Error opening a gzip reader for %s: %s", src, err)
  35         }
  36         defer gzipR.Close()
  37
  38         return untar(gzipR, dst, src, dir)
  39 }